A newly revealed patent shows Apple is researching design and power options
for an iWatch.

The patent application covers the idea that kinetic energy from everyday wrist movements could be converted to power to recharge an iWatch battery, and the suggestion that the iWatch screen could be set in a holster that converts from straight to a wristband as it is ‘slapped’ onto the wrist.

The latter proposal could make the watch easier to remove and put on, and consequently easier to charge when it is on an owner’s desk or bedside table.

The application, which was made in August 2011 and reported by Engadget, shows that Apple has been working on iWatch ideas for a number of years, and suggests includes a ‘simple virtual keyboard’ and an Amoled screen, which would reduce power consumption.

The device would, as has been rumoured extensively, include music browsing and phone call information. It would also include a flexible display that could be deactivated in areas that are not on display.

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A range of designers have mocked up what they think an iWatch could look like

There is no certainty that the patent will be granted, or that its contents will ever go into production, but the news of its submission adds to speculation in recent weeks that has all-but confirmed Apple is developing a smart watch as it seeks to repeat its success with the iPhone and iPad and spur a new market.

The details of the device itself are sketchy, but it is claimed its features could include a curved touchscreen made from a new type of flexible glass, as featured in the patent, an array of sensors to monitor exercise patterns and heart rate, “wave and pay” function, access to maps, voice control and wireless integration with the iPhone. That could allow the wearer to take calls and read messages without having to delve into their pocket or bag, or mean the iphone would know when it was in its owner’s hand and unlock automatically.

Apple reportedly has a team of 100 product designers working on the project, indicating it is now beyond the experimentation phase and heading towards production. It is claimed that Foxconn, the contractor that assembles iPhones and iPads in vast Chinese factory complexes, is in talks with Apple about the device, as well as working with component suppliers on efficient microchips and displays.